Description: The People's Liberation Army (PLA) Z-18 is a medium-weight helicopter derived from the state-of-the-art AC-313 VIP transport helicopter and developed by Changhe Aircraft Industries Corporation (CAIC) and Avicopter. It is powered by three WZ-6 turboshaft engines and the airframe is made of composite materials and titanium. The Z-18 rotorcraft maximum takeoff weight is 13.8 tons and features integrated avionics as well as the non-retractable landing gear from the Super Frelon helicopter family. The Z-18F is an anti-submarine warfare (ASW) helicopter first revealed on the flight deck of the PLA Navy (PLAN) Liaoning aircraft carrier in 2013-2014. The Z-18F helicopter is equipped with surface search radar, dipping sonar, hardpoints intended for torpedoes and/or anti-ship missiles, and sonobuoys.